Rotary broom attachment for traction vehicles

ABSTRACT

A rotary brush assembly that is mounted to a traction vehicle such as a skid steer type vehicle in such a way to as to be capable of sweeping horizontal, vertical, and overhead surfaces. The device is capable of sweeping in close proximity to objects protruding from these surfaces. The assembly is attached to the vehicle such that the operator has and an unrestricted view of the swept surface immediate to the brush, allowing the operator to address skips as they occur.

CROSS-REFERENCE TO RELATED APPLICATIONS FEDERALLY SPONSORED RESEARCH

Not applicable.

BACKGROUND OF THE INVENTION FIELD OF INVENTION

This invention relates to rotary angle broom sweeping attachments for skid steer loaders.

BACKGROUND OF THE INVENTION

The concept of employing rotary brooms to sweep flat surfaces has been around for some time. Configurations for rotary brushes are either transverse, where the brush axis of rotation is parallel to the ground, or vertical, where the brush axis of rotation is perpendicular to the ground. There are also single brush configurations and multiple brush configurations. The present invention deals with both a transverse single brush that will be referred to as simply “the brush” and a single vertical brush that will be referred to as a “gutter broom”. It would be clear to one skilled in the art that this invention could be applied to other brush orientations and multiple brush assemblies as well.

Numerous improvements to rotary brushes have been made: Mechanisms have been developed to change the angle of the broom relative to the direction to in which it is being moved or drawn as related in U.S. Pat. No. 1,806,054; Differing methods were developed to drive the brush as presented in U.S. Pat. Nos. 2,229,229 and 3,284,831; Ways were devised to raise and lower the brush as in U.S. Pat. No. 524,709; Contrivances were created to keep the brush parallel with the surface being swept U.S. Pat. No. 6,446,297. There are also numerous ways in which the broom can be moved across the swept surface such as self-powered brooms where the broom assembly has its own means to drive the brush. Rotary brooms have been pulled or pushed by any prime mover including animal power since their inception as seen in U.S. Pat. No. (30644). Rotary brooms have been adapted to fit onto many diverse types of motor vehicles not specifically created with sweeping in mind. These vehicles include road graders, trucks, lawn mowers, utility tractors as well as skidsteer loaders.

Skidsteer loaders, because of their extreme maneuverability and quick response are very well adapted for Rotary broom skidsteer attachments. These broom-equipped skidsteers are employed in the landscape industry to sweep leaves and level compost. They are used in agriculture for a number of tasks such as cleaning livestock pens and aiding in removing grain or granular fertilizers from large flat storage bins. Parking ramp attendants use them to sweep dirt and snow.

The motion of an object such as a brush assembly can be one of six types. There are directions of linear motion and three types of rotational motion. Linear motion is non-rotational motion of an object along one of the three Cartesian coordinate axis, i.e. forwards/backwards, side to side, or up/down. Rotational motion is the spinning of an object about any one of the three Cartesian axis. For the purposes of this invention, the following terms will be used. The three linear degrees of motion are described in common language terms such as forward/backward, up and down, and side to side. These linear directions will also be used to define axis of rotation for rotational motion. Rotation about the forward/backward axis will be called roll, rotation about the up/down axis will be called yaw, and rotation about the side-to-side axis will be called pitch.

The skidsteer loader is an excellent means by which to power a rotary broom, but the design of all previous rotary broom attachments heretofore known suffer from a number of disadvantages that inhibit their effectiveness:

-   -   (a) The operator's view of the sweeping operation is impaired in         the manner by which that conventional rotary brooms attach to         the skidsteer. Most attachments are connected to the skidsteer         by what has become known as the “quick attach adapter”. The         invention discussed in U.S. Pat. No. 3,672,521 has become an         industry standard for quickly mounting tools such as buckets or         pallet forks to the skidsteer. The quick attach adapter and its         mounting position is illustrated in Bobcat brochure number         B-1619 and Sweepster brochures numbers LH 6/00 and BDA 3/02. As         is evident in these brochures, skipped spots that the operator         he has missed will not be apparent to him until he has traveled         far enough forward to allow him to catch sight of them out his         rear window. This can be a significant distance depending on the         design of the skidsteer loader. To address a skipped spot, will         require the operator to move the skidsteer to the spot,         reposition the brush at the point where he started to skip, and         re-sweep the area. The operator will again not know if he has         fully accomplished his task until he can again view the area in         question out of his rear window.     -   (b) An operator of a conventional skidsteer powered angle broom         attachment has a limited vision to the sides of the skidsteer.         Operating a skidsteer with a rotary broom attachment other than         in an unobstructed open area requires the operator to have good         visibility of objects that are in close proximity of the         machine. The extremely quick response and maneuverability of the         skidsteer operating in a close proximity to stationary objects         as walls, raised sidewalks, or parked vehicles exemplify the         operator's need to have the best visibility possible. Sweeping         when pedestrians are present makes this need even more crucial.         The main boom arms of skidsteers must be in a specific position         for all sweeper attachments to function. Refer to Bobcat         brochure number B-1619 and Sweepster brochures number LH 6/00         and BDA 3/02. These brochures illustrate the position at which         the boom arms must be maintained to effectively power         conventional rotary brooms. The boom arms run diagonally,         starting low at the front of the skidsteer and increase in         height to a point at the rear of the skidsteer. An increasingly         large blind spot is formed beginning at the sides of the         skidsteer and culminating at the rear of the machine. Jackson's         invention, U.S. Pat. No. 6,446,297 is a rotary broom attachment         for a non-conventional type of skidsteer that has the operator's         platform on the rear of the skidsteer. The operator of this type         of skidsteer has a different field of vision from that of an         operator of a conventional skidsteer loader. If this device         where modified for use on a conventional skidsteer the         operator's view of the sweeping operation would be improved.         However the position of the “Quick attach adapter” would         critically interfere with the operator's view of objects in his         forward direction of travel. This is due to the “The controlling         surface illustrated in drawing FIG. 6 and the mounting surface         number 13” of U.S. Pat. No. 6,446,279 must be in a relatively         vertically position for the device to function. Additionally,         for this device to be adapted to conventional skidsteers the         distance between the skidsteer and the brush would have to be         increased along with all its controlling members. A device of         this proportion would mean that the brush would be at a         considerable distance ahead of the skidsteer making the sweeping         attachment front end heavy, cumbersome and hard to control.     -   (c) It is apparent that adjustable angle rotary broom skidsteer         attachments heretofor known are limited in the amount of tilt         (yaw) to about thirty degrees. As illustrated in “Bobcat         brochure number B-1619”, “Sweepster brochures numbers LH 6/00         and BDA 3/02” and “BRADCO brochure B-AM 2/02”. The reason for         this limitation is that when the broom is angled more than         thirty degrees the brush will not cover both right and left         wheel tracks of the skidsteer that powers it. Drawing FIGS. 1 a,         1 b, and 1 c illustrate a conventional angle broom attachment         with the brush in three positions of tilt (yaw). In FIG. 1 a,         the brush is in the transverse or straight position. In FIG. 1         b, the brush is tilted thirty degrees. In FIG. 1 c, the brush is         tilted thirty-five degrees. Comparing FIGS. 1 b and 1 c         illustrates how the additional five degrees of yaw will fail to         cover the wheel track of the skidsteer. This failure to cover         the wheel track will increase the occurrence of cross         contamination of the area that has been swept. FIG. 1 c also         demonstrates that the wheels of the skidsteer will come in         contact with a vertical object running parallel with the         skidsteer before the brush will. This inhibits the broom's         ability to sweep close to vertical objects without leaving a         skip when the broom is angled.

The inability of angle broom attachments to operate with an angle (yaw) greater than thirty degrees has additional drawbacks:

-   -   (1) Additional power is required to drive the brush because more         of the material being swept comes to rest in the path of the         brush rather than to the side. This means that the brush has to         continually re-sweep a greater portion of the sweepings with         each pass until it is cleared to the side of the skidsteer. In         referring to Drawing FIGS. 2 a and 2 b which are drawings of the         same sweeper attachment. The brush in FIG. 2 a is angled less         than the brush in FIG. 2 b. Number 10 of FIGS. 2 a and 2 b,         indicate a box shaped area depicting where the swept material         will come to rest as the brush continues on a forward path.         Number 20 of FIGS. 2 a and 2 b, is a box shaped area         representing the sweepers forward path. Number 30 of FIGS. 2 a         and 2 b, indicates the triangular shaped areas that represent         the swept particles that will initially clear the sweepers path         as it moves forward. Number 40 of FIGS. 2 a and 2 b, indicates a         four sided polygonal area that represents particles that have         been swept at least once and will be swept again as they have         came to rest in the broom's path. The area represented by number         40 of FIG. 2 b is significantly smaller than the area         represented by number 40 of FIG. 2 a. The difference in the size         of these two areas will represent the continuous additional         amount of re-swept material that the less angled brush will         encounter in its forward sweeping path. It is apparent that less         power will be needed by the brush that is angled more because         less re-swept material will be encountered with each pass of the         broom.     -   (2) The continued re-handling of the sweepings, as has been         substantiated, will increase the wear on the bristles and         substantially reduces the service life of the brush in general.     -   (d) Prior art does not address the use of skidsteer-powered         brushes to clean surfaces such as walls and ceilings. Previous         skidsteer powered rotary angle brooms have been designed to         sweep on a relatively flat plane that extends parallel with the         ground. A need has been identified for a device which will aid         in cleaning the walls and ceilings of such things as semi-truck         trailers, barges, storage bins, and bunkers.     -   (e) Prior art was reviewed for an effective and economical way         for skidsteer loaders that are quipped with only one auxiliary         hydraulic circuit to operate both the drive motor and the angle         adjustment from the operators seat. A need has been recognized         for this and is addressed in U.S. Pat. No. 6,354,081. As is         discussed in this patent, skidsteer loaders are equipped with         only one auxiliary hydraulic circuit with one valve controlling         the oil flow. Rotary angle brooms need two such circuits to be         efficient (One circuit to supply oil flow for the motor that         powers the brush and one circuit to supply oil to the cylinder         that adjusts the angle (yaw) of the broom.) The search of prior         art revealed that except for this device the only other way         found to accomplish this task was to add an additional hydraulic         valve, either manually or electrically operated. These valves         are typically mounted on the broom. Prior to my invention the         operator could not reach the manually activated valve from his         seat, requiring him to stop the machine and leave the operator's         compartment to manipulate the valve. An electrically operated         solenoid valve would allow the operator to operate the valve         from his seat. However an array of burdensome electrical wires         and connectors would be needed to make it function. The         skidsteer must also be wired with a means to control the valve.         Additionally an electrical connection must be made each time the         broom is attached to the skidsteer and diconnected each time the         broom is detached. The electrical solenoid valve, wires,         connections, and, controls are prone to operational         difficulties. This system often fails, which is not surprising         when one considers the environment the skidsteer is designed to         operate in. The device, U.S. Pat. No. 6,354,081 appears to have         solved the problem of controlling two separate rotary broom         functions with one auxiliary hydraulic circuit supplied by the         skidsteer. The cost involved in using this option to accomplish         the task is greater than what is needed as well as being much         more complicated.     -   (f) Prior to my invention it was impossible for skidsteer         powered rotary angle brooms, operated in an angled position, not         to leave skips next to vertical systems. Refer to drawing FIGS.         10 b and 10 c. The right side wheels of the skidsteer will         contact a continuous vertical surface before the brush can get         close. Many commercial street sweeper manufacturers add what is         called a gutter broom to their sweeper to overcome this problem         (refer to Broce Broom brochure titled “Optional Curb Sweeper”.)         Currently makers of skidsteer sweeper attachments have added         them to “bucket brooms” as referenced to in a YORK brochure         titled, “Model SSPU York Skid Steer Loader Mounted Sweeper”. A         bucket broom can be described as a sweeper attachment for         skidsteer loaders that have a rotary brush fixed to the front of         a bucket tool attachment. The rotary brush deposits the         sweepings into the bucket, in essence acting like a large         dustpan. Hydraulically driven gutter brooms have been attached         to these bucket brooms to allow the device to sweep next to         vertical structures. These hydraulically driven gutter brooms         can easily be added to rotary angle broom skidsteer attachments         but there is no prior art giving evidence of this fact. If a         manufacture were to add a conventional hydraulically driven         gutter broom to a rotary angle broom skidsteer attachment there         would be a number of problems to overcome:     -   (1) The gutter broom mount and the rotary broom structure must         be sturdy enough to support the high torque generated by the         gutter broom drive and endure continual incidental contact that         is indigenous to the gutter brooms normal operation;     -   (2) The gutter broom must be fixed to the rotary angle broom in         such a way as to be folded out of the way to a position that         would not interfere with the operation of the rotary brush when         not immediately needed;     -   (3) Typically, many sweepers that employ gutter brooms are         hydraulically driven. To install a gutter broom on a rotary         angle broom skidsteer attachment would require adding an         additional hydraulic system. This would entail installing an         elaborate hydraulic system to power the motor that drives the         gutter broom, additional to the system discussed in         paragraph (e) under Background of the Invention—Prior Art;     -   (4) The gutter broom must be fixed to the rotary angle broom in         such a way as to be removed easily if the need arises;     -   (5) A speed control would have to be devised to keep the gutter         broom rotating at a rate proportional to the rate of rotation of         that of the rotary brush;     -   (6) The hydraulically driven gutter broom would have to be         configured to the rotary angle broom in such a way that the         gutter broom could be operatively angled (yaw) in conjunction         with the rotary brush;     -   (7) An overall design would have to be employed that would give         the operator the ability to control the pitch angle of the         gutter broom while automatically maintaining alignment with the         rotary brush;     -   (8) An overall design that would provide the operator an         unobstructed view of the gutter broom in operation as well as         objects that the gutter broom may encounter. This design would         also need to allow for the operator to assess the quality of the         sweeping operation and make needed adjustments ongoing;     -   (9) Devise a way to elevate the gutterbroom, when the attachment         is not in operation to protect it from being damaged.     -   (g) All brushes used by rotary angle brooms of the type under         discussion, must be elevated off the ground when not in use.         This precaution protects the brush and also prevents the brush         from getting flat spots. All manufacturers of skidsteer-powered         rotary angle broom attachments provide a means by which to         elevate the brush It is either crank down jacks or adjustable         legs that must be lowered. Usually at least one of either the         jacks or legs are needed for each right and left side of the         sweeping attachment. Please refer to prior art Bobcat brochure         number B-1619, Sweepster brochures numbers LH 6/00 and U.S. Pat.         No. 6,035,478 (reference number 94 “lift jack cranks”).         Conversely when the broom is being prepared for use these jacks         or legs must be raised. A task although necessary is quite time         consuming and can be easily overlooked if the skidsteer operator         must switch attachment tools frequently during the day;     -   (h) In reviewing prior art as U.S. Pat. Nos. 6,035,478 and         6,354,081 representative drawings of typical rotary angle broom         attachments it becomes apparent that inspecting and maintaining         the brush and its drive components is hampered by their design         in general. The brush cover limits access to these items when         the rotary angle broom is detached from the skidsteer and         resting on the support legs or jacks. Unless the skid steer is         employed to raise the broom to where the brush and its drive can         be reached more easily, access is to these areas is unduly         difficult;     -   (i) Rotary angle brooms of current production have either a         formed sheet metal cover or one made of thin molded plastic.         Refer to typical prior art parts illustrations as in “BRADCO         parts illustration CI-40” and “Bobcat parts illustration volume         3 attachments FIG. 61” item number 1). Both types are held in         place with numerous threaded fasteners. The metal covers such as         Bradco and Sweepster employ are susceptible to cracks caused by         vibration and corrosion. Large areas of paint on the underside         of the metal broom covers are soon scratched away due to the         abrasive nature of the materials being swept. The molded plastic         covers as seen in “Bobcat brochure number B-1619” are far better         for resisting corrosion. One of the drawbacks related to these         plastic covers is the way that they are fastened. The plastic         covers expand in warm weather and contracts in cold. Bulges         develop between the fasteners in hot weather providing a place         for dirt to accumulate. In cold weather when the plastic         contracts the accumulated dirt does not allow the plastic to         return to its original shape causing cracks to occur around the         fasteners;     -   (j) The parts required to assemble an average rotary angle broom         is displayed in a typical prior art parts illustration as         “BRADCO parts illustation CI-40” and “Bobcat parts illustration         volume 3 attachments FIG. 61 item number 1”. It is easy to         realize that assembly of these rotary broom attachments can be         intricate and time consuming resulting in added cost to the         consumer. Given the large number of parts required to construct         an adjustable rotary angle broom using prior art designs one can         foresee the degree of maintenance that a broom of this design         would need;

BACKGROUND OF INVENTION—OBJECTS AND ADVANTAGES

Accordingly, several objects and advantages of my invention are:

-   -   (a) To provide a sweeping attachment that will give the operator         a higher degree of sweeping dexterity that will produce a         savings over the prior art in time and equipment use, by:         providing a better view in regards to the sweeping operation         proper without detrimentally affecting his view of objects         forward of the brush; allowing the operator to detect any skips         or areas that must be readdressed as they occur thus the         operator need not interrupt his sweeping task to appraise the         work he has accomplished; in essence provide the operator an         increase in control over the brush to match the increase in view         of the sweeping operation.     -   (b) To provide the operator a better view of objects in close         proximity to the right and left sides of the machine without         sacrificing the view of objects that are in the path of the         brush. An inherent feature of skidsteer loaders is its ability         to maneuver very quickly. The inability to clearly see objects         or people near the machine can have dire consequences. In the         operating position of my invention, the “quicktach adapter” that         the brush assembly is mounted to is rotated forward in a         horizontal position rather than a vertical position. This         horizontal position gives the operator the narrowest possible         profile or view of the “quicktach adapter” and will not         detrimentally impair the operator's forward vision. In the         operating position the boom arms of the skidsteer are elevated         allowing the operator to see the tires of the skidsteer and any         objects close to them;     -   (c) My invention is capable of sweeping at angles (yaw) greater         than thirty degrees. This increase in operating angle (yaw) over         that of prior art will require less power to operate as well as         extend the life expectancy of the brush. By angling (yaw) the         brush more it is apparent that less power will be needed. Less         re-swept material will be encountered with each pass of the         broom. Consequently the bristles will have less wear which will         increase the life expectancy of the brush and the broom in         general.     -   (d) To provide a rotary angle broom attachment for skidsteer         loaders capable of sweeping vertical surfaces at an angle as         well as overhead surfaces straight on. Most skidsteer tool         attachments such as the bucket tool utilize the full pitch         motion of the rotating joint that is located at the ends of the         boom arms. Rotary angle brooms illustrated in prior art only use         very little of this pivot motion. The Quicktach adapter”         attached at this joint when mated to a conventional rotary broom         approximates vertical whether the broom is used or parked. My         invention utilizes the full range of pitch motion available to         the “quicktach adapter” therein giving my invention the ability         to sweep horizontal surfaces, vertical surfaces, and ceilings.     -   (e) To provide an alternative method, that differs from prior         art, to hydraulically angle the brush from the operator's seat.         Prior art methods of alleviating this problem are either more         expensive, more complicated, harder to maintain, prone to         failure, or time consuming to connect and disconnect. My         invention is less complicated, less costly, easier to maintain,         and more dependable than what prior art offers. My invention         utilizes a manual type selector valve that is mounted on the         broom attachment at a location that the operator can easily         reach. This is possible because of the ability of my device to         utilize the fill range of pivoting motion that is available to         the “Quicktach adapter” previously discussed in (d) of         Background of the Invention-Objects and Advantages.     -   (f) To provide a means by which to allow a skidsteer powered         rotary angle broom, to sweep next to vertical structures with         out leaving a skip. To insure this function my invention         provides:     -   (1) A sturdy platform to which is mounted a gutter broom device.         This platform is capable of enduring the rigors indigenous to         gutter brooms usage.     -   (2) A simple means by which the gutter broom is retracted to a         position that would not impair the operation of the rotary         broom;     -   (3) A drive system for the gutter broom without the need to add         additional hydraulics and insuring that both the gutter broom         and the rotary brush are operating conjunctively;     -   (4) A simple means to easily install and remove the gutter broom         as needed;     -   (5) A method to synchronize the speed of the gutter broom with         the speed of the rotary brush;     -   (6) A means to conjunctively angle (yaw) the rotary brush and         the gutterbroom;     -   (7) An overall design that gives the operator the means to         control the pitch angle of the gutter broom providing that the         functionality of both brooms remain interdependently constant as         the pitch angle is adjusted;     -   (8) A mechanism that gives the operator an unobstructed view of         the gutter broom working in conjunction with the rotary brush,         at the same time provide the operator with unimpaired view of         objects that the gutter broom is sweeping against;     -   (9) A means to automatically elevate the gutterbroom off the         ground when it is not used, in order to protect the brush;     -   (g) To provide for a means by which to elevate the rotary brush         off the ground automatically when the broom is parked and not in         use, effectively insuring that the brush is protected.     -   (h) To provide an improved designed rotary angle broom skidsteer         attachment that allows the broom to be inspected and maintained         more easily than what is presented in prior art;     -   (i) To provide a cover assembly that is, easier to install or         remove, less prone to cracking, cheaper to construct and less         costly to maintain;     -   (j) To provide an invention that negates the need for jacks or         legs that must be lowered each time the broom is disconnected         and then raised each time the broom is attached to the         skidsteer, thereby increasing overall productivity of the         operator and the machine;     -   (k) To provide a rotary angle broom attachment for skidsteer         loaders that requires fewer pieces, less time to construct and         costs less to produce.

Further objects and advantages of my invention will become apparent from a consideration of the drawings and ensuing description.

SUMMARY

A rotary brush assembly powered by a traction vehicle having a auxiliary hydraulic system, a forward and reverse direction of travel. The operator controlled brush assembly is capable of sweeping horizontal, vertical and overhead surfaces, in close proximity of protruding objects.

DRAWING—FIGURES

FIG. 1 a. Is an overhead view depicting the straight forward position of a conventional rotary angle broom of a prior art design, in relationship to the tires of the skidsteer to which it is attached.

FIG. 1 b. Is an overhead view depicting a sweeping pattern made by a conventional rotary angle broom of a prior art design operating at an angle of thirty degrees, in relationship to the tires of the skidsteer powering it.

FIG. 1 c. Is an over head view depicting a sweeping pattern made by a conventional rotary angle broom of a prior art design operating at an angle of thirty five degrees, in relationship to the tires of the skidsteer powering it.

FIG. 2 a. Is an overhead view depicting a sweeping pattern expressing the amount of sweepings a brush must re-sweep at the current angle of adjustment.

FIG. 2 b. Is an overhead view depicting a sweeping pattern expressing the amount of sweepings a brush must re-sweep at an angle of adjustment that is greater than that exhibited in FIG. 2 a.

FIG. 3 a Is a side view of my invention in the parked position, of the preferred embodiment.

FIG. 3 b. Is a side view of my invention in the operating position, of the preferred embodiment.

FIG. 4 a. Is a perspective view displaying the two main frameworks my invention.

FIG. 4 b. Is a perspective view of the two main frames of my invention assembled.

FIG. 5. Is a frontal view of my invention in the straight-forward position without the brush cover.

FIG. 6 a. Is a over head view of my invention angled entirely to the right, depicting the swept area in relationship to the wheels of the skidsteer.

FIG. 6 b. Is a over head view of my invention in the straight ahead position, depicting the swept area in relationship to the wheels of the skidsteer.

FIG. 6 c. Is a over head view of my invention angled entirely to the left, depicting the swept area in relationship to the wheels of the skidsteer.

FIG. 7. Is a side view of my invention indicating the placement of its parts.

FIG. 8. Is a side view of the brush support frame and the cover support frame.

FIG. 8 a. Is an exploded side view of cover slots support frame and the cover support frame.

FIG. 9. Is a frontal view of my invention in the straight forward position without the brush cover detailing the brush drive assembly.

FIG. 10. Is a side view of my invention showing the gutter broom attached to the brush support frame in its operating position.

FIG. 10 a. Is a frontal view of my invention showing the gutter broom attached to the brush support frame in its operating position.

FIG. 11. Is an enlarged side view of my invention showing the gutter broom attached to the brush support frame in its operating position.

FIG. 11 a. Is an enlarged frontal view of my invention showing the gutter broom attached to the brush support frame in its operating position.

FIG. 11 b. Is an exploded frontal view of my invention showing the gutter broom drive mechanism.

FIG. 11 c. Is a frontal view of my invention depicting the operating, intermediate and stored positions of the gutter broom.

FIG. 11 d. Is an exploded frontal view of my invention showing the drive hub and cup that comprises the flexible drive coupler.

FIG. 12. Is of a alternative embodiment of my invention powered by a tracked backhoe working overhead.

FIG. 13. Is of a alternative embodiment of my invention powered by a tracked back hoe working in a trench exposing buried cable.

DRAWINGS Reference Numerals

-   1. Skid steer loader -   1 a. Boom arms -   1 b. Hydraulic cylinders -   1 c. Operators cab -   1 e. Hydraulic cylinders -   2. Broom assembly -   3. Top quick attach adapter pivot joint -   4. Pivot joint -   5. Pitch axis -   10. Support structure -   10 a. Quick attach receiver -   10 b. Beam -   10 d. Quick attach adapter -   15. Hydraulic Cylinder -   20. Brush support frame -   20 a. Brush -   20 b. Hydraulic motor -   20 c. Main beam -   20 d. Motor support member -   20 e. Bearing support member -   20 g. Broom shaft -   20 h. Bearing -   20 i. Threaded fasteners -   20 j. Bearing pad -   20 f. Splined coupler -   21. Brush axis of rotation -   27. Manual double selector valve -   28 a. Motor mount -   30. Yaw pivot joint -   31. Inner bushing -   31 a. Threaded fasteners -   31 b. Flat washers -   31 c. Threaded locking nuts -   31 g. Rear cross member -   32. Outer bushing -   33. Vertical axis -   35. Pentagonal shaped gussets -   35 a. Skid shoes -   35 b. Threaded fasteners -   37 a. Forward brush cover members -   37 c. Front cross member -   37 d. Rear brush cover members -   37 g. Rear cross member -   37 m. Ninety-degree angle iron -   38. Brush cover -   38 f. Front brush cover edge -   38 r. Rear brush cover edge -   39 f. Front brush cover retaining slot -   39 r. Rear brush cover retaining slot -   50. Gutter broom Assembly -   50 b. Gutter broom brush -   50 c. Top hole -   50 d. Middle hole -   50 e. Bottom hole -   50 f. Roll joint -   50 i. Roll joint axis -   50 j. Backing plate -   50 k. Hub -   50 l. Drive line -   50 m. Drive hub -   50 n. Cup -   50 o. Drive shaft -   50 p. Pin -   50 q. Gearbox -   50 r. Input shaft -   50 s. Support plate -   50 t. Drive hub hole -   50 u. Gutter broom drive shaft hole -   50 v. Output shaft -   50 w. Shear pin -   50 x. Universal joint -   51 c. Top bushing -   51 d. Middle bushing -   51 e. Bottom bushing

DETAILED DESCRIPTION FIGS. 3 a, 3 b, 3 c, 3 d, and 3 e—Preferred Embodiment

FIG. 3 a shows the invention of a broom assembly 2 attached to a skid steer loader 1 in the parked position. FIG. 3 b shows the invention in the work position of its preferred embodiment. A skid steer loader 1 is adapted for use in many industrial, agricultural and landscaping applications wherein easy maneuverability, power lifting and transporting capabilities are required. The skid steer loader 1 is provided with a pair of laterally spaced boom arms 1 a that are driven along an arcuate path by hydraulic cylinders 1 b. One end of the boom arms 1 a are pivotally attached to the main body of the skid steer loader 1 on each side of the operator cab 1 c. The opposite ends of the boom 1 a arms are pivotally attached to the bottom of the “quick attach adapter” 10 d forming pivot joint 4 rotating about a pitch axis 5. The tube ends of hydraulic cylinders 1 e are pivotally attached on the boom arms and the rod ends of hydraulic cylinders 1 e are also pivotally attached to the top of “quick attach adapter” 1 d forming pivot joint 3. The expansion and contraction of hydraulic cylinders 1 e produces the pitch motion of pivot joint 4. The actuation of hydraulic cylinder 1 e is a normal function of the skid steer loader 1 and is controlled by the operator.

FIGS. 4 a and 4 b shows broom assembly 2 divided into two main parts: The brush support frame 20 that holds a brush 20 a and support structure 10 including a quick attach receiver 10 a. The quick attach receiver 10 a, is configured to be quickly attached and detached from the “quick attach adapter” mechanism 10 d of the skid steer loader 1. The attachment is made and disconnected in a conventional manner.

FIG. 5 shows a frontal view of broom assembly 2. Brush 20 a, in its preferred embodiment, is a transverse brush that is 72 inches wide with a diameter of 32 inches. The brush 20 a rotates about axis 21, to sweep various surfaces clean of debris. In its preferred embodiment, brush 20 a, is powered by a hydraulic motor 20 b, which is hydraulically connected to a manual double selector valve 27. The manual double selector valve 27 is mounted on the topside of beam 10 b, of support 10 and is connected to the skidsteer vehicle's existing hydraulic system by hoses (not shown). This poses the first hydraulic circuit. The flow of oil to the manual double selector valve 27 is a normal function of the skidsteer that the operator controls.

In referring to FIGS. 4 a, 4 b, and 5, of the preferred embodiment, members and beams are constructed of a suitable tubular material. With this being said, the support structure 10 and the brush support frame 20, are connected together by an inner bushing 31 and an outer bushing 32 forming a yaw pivot joint 30 rotating about a vertical axis 33. Vertical axis 33 is centered on the brush 20 a. A hydraulic cylinder 15 is mounted between the support structure 10 and the brush support frame 20 such that expansion and contraction of the hydraulic cylinder 15 pivots the broom to the desired angle of yaw. Rotation about a yaw axis of rotation 33 is facilitated by the yaw pivot joint 30. The operator controls the yaw rotation as a normal function of the skidsteer. In the preferred embodiment the angle is adjustable to 35 degrees in either direction from center. FIGS. 3 a, 3 b, and 3 c illustrate yaw motion. Hoses (not shown) connect hydraulic cylinder 15 and manual double selector valve 27, establishing the second hydraulic circuit. The manual double selector valve 27 has two positions of operation. Position one of valve 27 allows oil to flows through the first hydraulic circuit powering hydraulic motor 20 b. When valve 27 is placed in the second position, oil is diverted from the first hydraulic circuit to the second hydraulic circuit supplying oil to cylinder 15.

FIG. 7 shows a side view of the preferred embodiment. In constructing pivot joint 30 outer bushing 32 is cut to a width of three and fifteen sixteenth inches from standard seamless round tubing stock having an outside diameter of eighteen inches, and an inside diameter of seventeen and one fourth inches. The inner bushing 31 is formed from an appropriate length of steel flat bar-stock four inches wide and three-eighths of an inch thick. The bar-stock is rolled to conform to the inside diameter of outer bushing 32. The rolled bar-stock is inserted into the outer bushing 32 and allowed to expand, further conforming to the inside diameter of outer bushing 32. A weld is placed on the seam of the rolled bar-stock creating inner bushing 31. This method of producing the pivot joint is efficient and requires no machining. The quick attach receiver 10 a is permanently located on the topside and at one end of beam 10 b of support structure 10. Inner bushing 31 is located at the opposite end of beam 10 b and centered on the bottom side, where it is welded in place. These welds must be made on the inside of inner bushing 31. FIG. 7 shows the assembly of the preferred embodiment. Threaded fasteners 31 a are permanently fixed, front and rear, to the inside of inner bushing 31. The inner bushing 31 of support structure 10 is fitted into outer bushing 32 of brush support frame 20. Threaded fasteners 31 a protrude downward and extend one inch past bushings 31 and 32. Flat washers 31 b and threaded locking nuts 31 c are installed onto threaded fasteners 31 a and tightened. At the ends of rear cross member 37 g are welded pentagonal shaped gussets 35 to which skid shoes 35 a are loosely attached by threaded fasteners 35 b.

FIGS. 4 a and 4 b shows outer bushing 32 welded to the topside and centered on main beam 20 c of brush frame support 20. These welds must be made on the outside of outer bushing 32. One end of motor support member 20 d is welded to the underside and at one end of the main beam 20 c. Motor mount 28 a is welded to the exposed end of motor support member 20 d. On the bottom side and on the opposite end of main beam 20 c is welded bearing support member 20 e. Bearing pad 20 f is welded to the exposed end of bearing support member 20 e. Three bushings 51 c, 51 d, and 51 e, are vertically spaced and weld installed in bearing support member 20 e. These vertically spaced bushings are the points of attachment for the gutter broom assembly 50. Bushings 51 c, 51 d, and 51 e have an inside diameter of ¾ inch, an outside diameter of 1½ inch and a length of 5 inches. Bushing 50 d and pin 50 p comprise a roll joint 50 f about roll joint axis 50 i.

The brush cover 38 is supported by a brush cover frame. Forward brush cover members 37 a are welded to the front side of the motor support member 20 d and 20 e. The two forward brush cover members 37 a are conjunctively aligned and extend forward ninety degrees from the motor support member 20 d and the bearing support member 20 e. Front cross member 37 c is rotated on a pitch axis of forty-five degrees and welded to the exposed ends of forward brush cover members 37 a.

The two rear brush cover members 37 d are welded to the backsides of members 20 d/22 e. They are conjunctively aligned, sloping diagonally downward, and away from members 20 d/22 e, at an angle approaching fifty eight degrees. Cross member 37 g is a square tubing and is positioned so that two sides are parallel with the vertical sides of motor support member 20 d and bearing support member 20 e. Cross member 37 g is welded to the exposed ends of brush cover members 37 d.

FIG. 6 c shows that front cross member 37 c and the rear cross member 37 g are parallel to the brush 20 a and the main beam 20 c. FIGS. 8 and 8 a show brush cover 38 held in place the two brush cover retaining slots 39 f and 39 r, and two self-tapping threaded fasteners (not shown). Retaining slot 39 r is formed by welding a ninety-degree angle iron 37 m, longitudinally along the front side of rear cross member 37 g. Retaining slot 39 f is formed by welding a ninety-degree angle iron 37 m longitudinally along the underside of front cross member 37 c. The width of brush cover 38 is equal in length to the arc of a circle segment measured from the bottom of retaining slot 39 r to the bottom of retaining slot 39 f and having as its center point, axis of brush rotation 21. The length of brush cover 38 is equal to 12 inch less than the distance between the two rear brush cover members 37 d and 37 e.

In its preferred embodiment brush cover 38 is made from a sheet of plastic and having a thickness of {fraction (1/4)} inch. The properly sized plastic sheet is installed from the underside of frame 20, centered between brush cover members 37 d and 37 e. Edge 38 r of the plastic sheet is seated into retaining slot 39 r. Pressure is applied to the center of the plastic sheet causing it to arch, forcing edge 38 f to slip past retaining slot 39 f. The pressure is then relieved. The elasticity of the plastic sheet will force the edges 38 f and 38 r deeply into retaining slots 39 r and 39 f respectively. One self-tapping threaded fastener (not shown) is positioned on the longitudinal center of slot 39 f and one self-tapping threaded fastener (not shown) is positioned on the longitudinal center of slot 39 r. Pilot holes for the threaded fasteners pierce through the ninety-degree angle iron 37 m, through the {fraction (1/4)} inch thickness of plastic sheet 39, and through the wall of cross members 37 c and 37 g. With this configuration bulges cannot occur in brush cover 38, because the expansion of the plastic is unrestricted, there by reducing the possibility of cracks forming in brush cover 38.

FIG. 9 shows hydraulic motor 20 b to be connected to broom shaft 20 g by, splined coupler 20 f Broom shaft 20 g has a diameter of one and one quarter inches. Coupler 20 f is of the splined type common to the industry. One end of splined coupler 20 f is to be installed on the splined output shaft of hydraulic motor 20 b. The opposite end of coupler 20 f is welded to one end of broom shaft 20 g. On the opposite end of broom shaft 20 g is located bearing 20 h. Bearing 20 h is mounted to Bearing pad 20 j by threaded fasteners 20 i.

FIGS. 10 and 10 a shows a side view and a frontal view of the preferred embodiment of gutter broom assembly 50 attached to broom assembly 2. FIGS. 11 and 11 a are sectional enlargements of FIGS. 10 and 10 a In the preferred embodiment gutter broom brush 50 b is of the same diameter as brush 20 and is attached to backing plate 50 j. Backing plate 50 j is fastened to the outside diameter of hub 50 k. Hub 50 k slips onto output shaft 50 v and is locked in place. Gearbox 50 q has a ratio of 1:1 and is configured to rotate the gutter broom brush 50 b in the proper direction in order to work cooperatively with brush 20 a.

Matching support plates 50 s are spaced five inches apart. One support plate is located on the front side of bearing support member 20 e and one support plate located on the rear side of bearing support member 20 e. Holes 50 d and 50 e in support plates 50 s are 34 inch in diameter and are aligned with the bores of vertically spaced bushings 51 d, and 51 e of bearing support member 20 e. The alignment of gutter broom assembly 50 is maintained by the placement of pins 50 p through holes 50 c/51 d and 50 c/51 e of the support plates 50 s and through bushings 51 d, and 51 e of bearing support member 20 e. Right angle gearbox 50 q is positioned between support plates 50 s on the end opposite holes 50 d and 50 e. Threaded fasteners secure the support plates 50 s to gearbox 50 q. The design of support plates 50 s is such that the axis of rotation of the input shaft 50 r of gearbox 50 q is maintained in approximation to the axis of rotation 21 of broom shaft 20 g. Holes 50 c of support plates 50 s are positioned 90 degrees in relation to holes 50 d and 50 e of support plates 50 s. The distance between the centers of holes 50 c and 50 d is equal to the distance between the centers of holes 51 c and 51 d of bearing support member 20 e. The design of support plates 50 s are such that by removing pin 50 p from pinhole 50 e/51 e the gutter broom assembly 50 can be rotated upward 90 degrees. This rotation takes place at roll joint 50 f. Pin 50 p can then be reinstalled into holes 50 c/50 d to lock the gutter broom into the stored position as shown in FIG. 11 c. FIG. 11 b is an enlarged drawing showing the gutter broom driveline 501. Rotational force is supplied to gearbox 50 q by motor 20 b through broom shaft 20 g and driveline 501. Drive shaft 20 g is fitted with drive hub 50 m. Cup 50 n slips over drive hub 50 m and is welded to one end of drive shaft 50 o. On the opposite end of drive 500 is attached a universal joint 50 x that is fitted to the input shaft 50 r of gearbox 50 q.

FIG. 11 d shows the drive connection between drive shaft 20 g and drive shaft 500 of the preferred embodiment. Drive hub 50 m and cup 50 n work in conjunction to form a, self-aligning, detachable, drive coupling. Drive hub 50 m is made from a two-inch square steel shaft having a length of one and one quarter inches. All eight edges are beveled each way from the center, to a depth of {fraction (1/8)} inch, ending at the edges. Drive hub 50 m fits snuggly inside cup 50 n while allowing drive hub 50 m to oscillate, maintaining an alignment of drive shaft 500. A {fraction (1/4)} inch diameter hole 50 t is placed in shaft 20 g 1 inch from the end. Drive hub m has a corresponding hole 50 u through which shear pin 50 n is fitted. Shear pin 50 n is designed to shear if the torsional load on gutter broom brush 50 b becomes to great, there-by protecting gearbox 50 q from damage.

Additional Embodiments FIGS. 12 and 13

A preferred embodiment of the invention has been previously described. Those skilled in the art will recognize that many embodiments are possible within the scope of the invention. Variations and modifications of the various parts and assemblies can certainly be made and still fall within the scope of the invention. The invention is not limited for use with skidsteer loaders. Because of the way the invention is designed other powering sources can be employed such as backhoe excavators as shown in FIG. 12. A modification of the broom could make the attachment usable to uncover buried objects as in FIG. 13. Another embodiment would be to substitute a brush of the type employed in car washes with the bristle brush exhibited in the preferred embodiment.

Operation of Invention FIGS. 3 a, 3 b, 3 c, 3 d, 3 e, 3 f, 10 and 10 a

FIG. 3 a shows the conventional method of mounting broom assembly 2 to skidsteer 1 by fitting quick attach adapter 1 d of skidsteer 1 into quick attach receiver 10 a of broom assembly 2. To complete the attachment process, hydraulic hoses (not shown) are connected to the auxiliary hydraulic system of skidsteer 1 leading to manual double selector valve 27 mounted on broom assembly 2. The operator then places manual double selector valve 27 in the position that supplies oil to the first hydraulic circuit. FIG. 3 a also shows broom assembly 2 in its parked position. Broom assembly 2 rests on the right and left skid shoes 35 a and on the rear of the quick attach receiver 10 a. In the parked position brush 20 a is automatically elevated off the ground providing easy access for inspection and maintenance of brush 20 a, bearing 20 h, as well as motor 20 b.

FIG. 3 b shows skidsteer 1 and broom assembly 2 in the work position. The operator can clearly see the back side of brush 20 a and also any skips as they occur. Notice that boom arms 1 a are elevated giving the operator an unobstructed view of objects to the immediate sides of the skidsteer.

To place broom assembly 2 in the straight ahead operating position shown in FIG. 3 b, the skidsteer operator raises boom arms 1 a and extends hydraulic cylinders 1 e causing quick attach adapter 1 d to rotate pivot joint 3 about pitch axis 5. The operator continues extending hydraulic cylinders 1 e until quick attach adapter 1 d is approximately parallel with the ground, placing the broom assembly in the operating position. FIG. 3 b shows skidsteer 1 and broom assembly 2 in the work position. The operator can now control the down pressure applied to brush 20 a by adjusting the elevation of boom arms 1 a Notice that boom arms 1 a are elevated giving the operator an unobstructed view of objects to the immediate sides of the skidsteer.

To adjust the yaw angle of brush 20 a, the operator fully retracts cylinders 1 e causing quick attach adapter 1 d to rotate pivot joint 3 about pitch axis 5. Quick attach adapter 1 d will be rotated to a position past vertical as shown in FIG. 3 c. The operator adjusts the elevation of boom arms 1 a to a position where double selector valve 27 can easily be reached. The operator then places manual double selector valve 27 in the position that supplies oil to the second hydraulic circuit, containing cylinder 15. The operator activates the control that directs oil to cylinder 15 changing the angle of brush 20 a to a desired position. The operator then repositions manual double selector valve 27 to redirect the oil flow back to circuit one containing hydraulic motor 20 b. The operator is now free to reposition the broom assembly 2 in the operating position discussed previously.

FIG. 3 d shows the capability of broom assembly 2 to sweep debris from walls and ceilings. To accomplish this the operator places quick attach adapter 1 d in a vertical position. He then moves the skidsteer forward until rotating brush 20 a comes in contact with the wall. Using the normal operator controlled forward or reverse motion of the skidsteer varies the pressure that the brush exerts against the wall. By adjusting the elevation of boom arms 1 a the operator can raise or lower rotating brush 20 a progressively sweeping the wall. To sweep ceilings the operator places the quick attach adapter 1 d in a vertical position. Boom arms 1 a are elevated until brush 20 a contacts the ceiling. Adjusting Boom arms 1 a will dictate the amount of pressure brush 20 a exerts against the ceiling. The operator by way of the skidsteers controlled travel capabilities such as forward, reverse, and tuning, can direct rotating brush 20 a in a progressive sweeping pattern across the ceiling. To eliminate skips associated with sweeping next to protruding structures, gutter broom assembly 50 is attached to broom assembly 2 and placed in its work position as illustrated in FIGS. 10 and 10 a. The operator adjusts the yaw angle of brush 20 a so that gutter broom brush 50 b is ahead of brush 20 a as shown in FIG. 3 f. Ideally the leading edge of gutter broom brush 50 b should contact the surface to be swept while the trailing edge does not as shown in FIG. 3 e. The sweeping surface of gutter broom brush 50 b is parallel with quick attach adapter 1 d. The operator can control the effectiveness of the gutter broom by adjusting the pitch of quick attach adapter 1 d thereby adjusting the pitch angle of gutter broom brush 50 b. The operator can maintain operational continuity between gutter broom brush 50 b and brush 20 a by adjusting the elevation of boom arms 1 a. Downward force will expand the diameter of gutter broom brush 50 b as well as increasing the pressure with which brush 20 a contacts the surface to be swept. Gutter broom brush 50 b can be made to act independently of brush 20 a by rotating quick attach adapter 1 d fully forward increasing the pitch angle of gutter broom brush 50 b. In this position brush 20 a is held off the swept surface and all the downward pressure that the skidsteer operator can bring to bear is applied to the leading edge of gutter broom brush 50 b. Operating the gutter broom in this mode enables gutter broom brush 50 b to effectively sweep depressions adjacent to vertical structures.

Objects and Advantages

Accordingly, several objects and advantages of my invention are:

-   -   (1) To provide a sweeping attachment that will give the operator         a higher degree of sweeping dexterity that will produce a         savings over the prior art in time and equipment use, by:         providing a better view in regards to the sweeping operation         proper without detrimentally affecting his view of objects         forward of the brush; allowing the operator to detect any skips         or areas that must be readdressed as they occur thus the         operator need not interrupt his sweeping task to appraise the         work he has accomplished; in essence provide the operator an         increase in control over the brush to match the increase in view         of the sweeping operation.     -   (m) To provide the operator a better view of objects in close         proximity to the right and left sides of the machine without         sacrificing the view of objects that are in the path of the         brush. An inherent feature of skidsteer loaders is its ability         to maneuver very quickly. The inability to clearly see objects         or people near the machine can have dire consequences. In the         operating position of my invention, the “quicktach adapter” that         the brush assembly is mounted to is rotated forward in a         horizontal position rather than a vertical position. This         horizontal position gives the operator the narrowest possible         profile or view of the “quicktach adapter” and will not         detrimentally impair the operator's forward vision. In the         operating position the boom arms of the skidsteer are elevated         allowing the operator to see the tires of the skidsteer and any         objects close to them;     -   (n) My invention is capable of sweeping at angles (yaw) greater         than thirty degrees. This increase in operating angle (yaw) over         that of prior art will require less power to operate as well as         extend the life expectancy of the brush. By angling (yaw) the         brush more it is apparent that less power will be needed. Less         re-swept material will be encountered with each pass of the         broom. Consequently the bristles will have less wear which will         increase the life expectancy of the brush and the broom in         general.     -   (o) To provide a rotary angle broom attachment for skidsteer         loaders capable of sweeping vertical surfaces at an angle as         well as overhead surfaces straight on. Most skidsteer tool         attachments such as the bucket tool utilize the full pitch         motion of the rotating joint that is located at the ends of the         boom arms. Rotary angle brooms illustrated in prior art only use         very little of this pivot motion. The Quicktach adapter”         attached at this joint when mated to a conventional rotary broom         approximates vertical whether the broom is used or parked. My         invention utilize the fill range of pitch motion available to         the “quicktach adapter” therein giving my invention the ability         to sweep horizontal surfaces, vertical surfaces, and ceilings.     -   (p) To provide an alternative method, that differs from prior         art, to hydraulically angle the brush from the operator's seat.         Prior art methods of alleviating this problem are either more         expensive, more complicated, harder to maintain, prone to         failure, or time consuming to connect and disconnect. My         invention is less complicated, less costly, easier to maintain,         and more dependable than what prior art offers. My invention         utilizes a manual type selector valve that is mounted on the         broom attachment at a location that the operator can easily         reach. This is possible because of the ability of my device to         utilize the full range of pivoting motion that is available to         the “Quicktach adapter” previously discussed in (d) of         Background of the Invention-Objects and Advantages     -   (q) To provide a means by which to allow a skidsteer powered         rotary angle broom, to sweep next to vertical structures with         out leaving a skip. To insure this function my invention         provides:     -   (1) A sturdy platform to which is mounted a gutter broom device.         This platform is capable of enduring the riggors indigenous to         gutter brooms.     -   (2) A simple means by which the gutter broom is retracted to a         position that would not impair the operation of the rotary         broom;     -   (3) A drive system for the gutter broom without the need to add         additional hydraulics and insuring that both the gutter broom         and the rotary brush are operating conjunctively;     -   (4) A simple means to easily install and remove the gutter broom         as needed;     -   (5) A method to synchronize the speed of the gutter broom with         the speed of the rotary brush;     -   (6) A means to conjunctively angle (yaw) the rotary brush and         the gutterbroom;     -   (7) An overall design that gives the operator the means to         control the pitch angle of the gutter broom providing that the         functionality of both brooms remain interdependently constant as         the pitch angle is adjusted;     -   (8) A mechanism that gives the operator an unobstructed view of         the gutter broom working in conjunction with the rotary brush,         at the same time provide the operator with unimpaired view of         objects that the gutter broom is sweeping against;     -   (9) A means to automatically elevate the gutterbroom off the         ground when it is not used, in order to protect the brush;     -   (r) To provide for a means by which to elevate the rotary brush         off the ground automatically when the broom is parked and not in         use, effectively insuring that the brush is protected.     -   (s) To provide an improved designed rotary angle broom skidsteer         attachment that allows the broom to be inspected and maintained         more easily than what is presented in prior art;     -   (t) To provide a cover assembly that is, easier to install or         remove, less prone to cracking, cheaper to construct and less         costly to maintain;     -   (u) To provide an invention that negates the need for jacks or         legs that must be lowered each time the broom is disconnected         and then raised each time the broom is attached to the         skidsteer, thereby increasing overall productivity of the         operator and the machine;     -   (v) To provide a rotary angle broom attachment for skidsteer         loaders that requires fewer pieces, less time to construct and         costs less to produce.

Further objects and advantages of my invention will become apparent from a consideration of the drawings and ensuing description.

Conclusion, Ramifications, and Scope

Accordingly, the reader will see that the rotary angle broom attachment of this invention can be used to sweep horizontal, vertical, and overhead surfaces. This invention provides the operator with the visibility of the sweeping process to equal the agility of the traction vehicle that powers it, providing a safer, more efficient sweeping attachment. In addition the rotary angle broom attachment of this invention has the additional advantages in that

-   -   it permits the operator more control of the sweeping operation         in the operator regulates the amount of down pressure that is         applied.     -   it provides a rotary sweeper that can angle more than thirty         degrees thereby reducing brush wear, without exposing the wheel         tracks of the skidsteer.     -   it provides for a means by which to sweep directly next to         protruding objects stemming from the surface to be swept greatly         reducing skips.     -   it permits the operator to angle the brush from the operators         seat without the need for additional electrical wiring and         controls.     -   it eliminates the need for extendable legs or jacks to keep the         brush elevated off the ground.     -   it provides a brush cover system that is less costly to build,         easier to install, more durable and easier to maintain.

Although the description above contains many specificities, these should not be construed as limiting the scope of the invention but as merely providing illustrations of some of the presently preferred embodiments of this invention. 

1. A rotary brush assembly powered by a traction vehicle having an auxiliary hydraulic system, a forward and reverse direction of travel empowering said assembly to sweep horizontal, vertical and overhead surfaces, in close proximity of protruding objects, comprising: a) a mounting frame; b) a brush support frame; c) a rotary brush operatively connected to the brush support frame; d) a yaw pivoting joint permitting rotation of the frame about a first axis substantially perpendicular to the ground; e) a gutter broom assembly operatively connected to the brush support frame; f) a brush cover;
 2. The brush assembly of claim 1 wherein the rotary brush rotates about an axis of rotation substantially parallel to the ground when the brush support frame is in its centered position.
 3. The brush assembly of claim 1 wherein the rotary brush having a center shaft rotating about axis of claim 2, have a first end and a second end, said first end coupled to a hydraulic motor.
 4. The brush assembly of claim 1 wherein the gutter broom rotates about an axis of rotation substantially perpendicular to the ground when in the operating position, said axis substantially parallel to the ground when in the rest position.
 5. The brush assembly of claim 1 wherein the brush assembly is mounted substantially below an implement arm.
 6. A mechanism for attaching a rotary brush assembly to a traction vehicle comprising: a) an implement arm extending from the traction vehicle; b) a controlling surface located at an end of the implement arm; c) a pivot joint located at the end of the implement arm about which the controlling surface rotates, the pivot joint having an axis of rotation resulting in a pitch motion of said controlling surface; d) a means to attach said controlling surface to said mounting frame of claim 1, said controlling surface is controlled by the operator;
 7. The mounting frame of claim 1, referenced in the operating position, comprising: a) main beam, said beam having a top side, bottom side, a right side, a left side, a front and rear;
 8. The mechanism of claim 5 wherein said controlling surface is maintained in a position substantially parallel with the ground when said brush is engaged in sweeping horizontal surfaces.
 9. The yaw pivoting joint of claim 1 comprising: a) a inner bushing, said bushing attached to the front, underside of said beam of claim 7; b) a rear hydraulic cylinder mount, said mount attached to the rear, underside of said beam of claim 7; c) a outer bushing, said bushing cut to a predetermined width, having an inside diameter such that said outer bushing will tightly fit over the outside diameter of said inner bushing; d) a front hydraulic cylinder mount, said mount attached to said outer bushing. e) a hydraulic cylinder, said cylinder having a rod end and a tube end, said rod end attached to said front cylinder mount and said tube end attached to rear cylinder mount.
 10. The brush support frame of claim 1 comprising: a) a main beam running perpendicular to the forward direction of travel, having first an second ends; b) the outer bushing of claim 7, said bushing attached to the top side and centered longitudinally as well as crosswise on said main beam; c) a bearing support member, said member having a front side, a back side, first and second ends, said first end is fastened to the bottom side first end of said main beam, protruding downward, at right angles from said main beam; a) said support member having a top mounting bushing, middle mounting bushing, and bottom mounting bushing, for the installation of said gutter broom assembly of claim
 1. b) said bushings are fastened to said support member, vertically spaced, protruding slightly through the front side and back side of said support member. d) a bearing pad, said pad fastened to the second end of said bearing support member. e) a motor support member, said member having first and second ends, said first end is fastened to the bottom side at second end of said main beam, protruding downward at right angles from said main beam; f) a motor mount, said mount fastened to the second end of said motor support member; g) a pair of front brush cover members, said cover members having first and second ends, said ends being aligned, first ends fastened to the front sides of said bearing support member and said motor support member respectively; said cover members protrude forward at right angles from said bearing support member, and said motor support members; h) a front brush cover cross member, said cross member fastened to said second ends of said front cover members; i) a front brush cover slot member, said member longitudinally attached to said front cross member. j) a front slot, said slot created by attaching said slot member to said front cross member k) a pair of rear brush cover members, said cover members having first and second ends, said ends being aligned, said first ends fastened to the rear sides of said bearing support member and said motor support member respectively, said cover members protrude downward and away from bearing support member and said motor support member respectively at an angle approximating 58 degrees; l) a rear brush cover cross member, said cross member fastened to second ends of said rear cover members; m) a pair of gusset mounts, said mounts are fastened to the ends of said rear cross member; n) a pair of skid shoes, said shoes attach to said mounts; o) a rear brush cover slot member, said member longitudinally attached to said rear cross member; p) a rear slot, said slot created by attaching said slot member to said front cross member; q) a front cover retainer, said retainer installed at the longitudinal center and the crosswise center of said front slot member, pinning said slot member, said cover and said front cross member together; r) a rear cover retainer, said retainer installed at the longitudinal center and the crosswise center of said rear slot member, pinning said slot member, said cover and said front cross member together;
 11. The brush cover of claim 1, said cover made from material having elasticity, said cover having a front edge, a rear edge, a left edge and a right edge, said front edge fitted into said front slot and said rear edge fitted into said rear slot.
 12. A means enabling the operator to control the rotation of both said brush and said yaw pivot joint of claim 1, comprising: a) a circuit selector valve, said valve operatively connected to auxiliary hydraulic system of claim 1, wherein: a) said valve is mounted on the top side toward the front of beam of claim 6; b) said valve is operatively connected to motor of claim 3 and cylinder of claim 9; c) the oil flowing from auxiliary hydraulic system of claim 1 is operator controlled; d) said valve having a first and second positions; e) said valve is manually actuated; f) the first position of said valve, oil is supplied to motor of claim 3; g) the second position of said valve, oil is diverted to cylinder of claim
 9. 13. The gutter broom assembly of claim 1 comprising: a) a front and rear support plate, said plates having: a first end, and a second end, including: a) first, second, and third attachment holes, said holes located on first end of said plate, said holes attach the gutter broom assembly of claim 1 to brush support frame of claim 1 second and third of said holes being vertically spaced and aligned; first of said holes are aligned and at right angles of said second holes; second of said holes having a location relative to third of said holes, commensurate with the vertical spacing of said middle bushing of claim 10 relative to said bottom bushing of claim 10; first of said holes having a location relative to second of said holes, commensurate with the vertical spacing of said top bushing of claim 10 relative to said middle bushing of claim 10; b) gearbox mounting holes, said holes are aligned and located on said second end of said plates; b) a right angle gearbox, said gearbox having a right side, a left side, a front side, a back sided, a top side and bottom side, comprising: a) a specified gear ratio; b) front side mounting holes; c) a rear side mounting holes, said front side mounting holes align with said rear side mounting holes; e) a input shaft; f) a output shaft; c) a middle retaining pin, said retaining pin fills the second of said attachment holes, passing through said middle bushing of claim 10 creating a roll axis of rotation, said axis permitting a roll movement of gutterbroom assembly of claim 1; d) a top retaining pin, said retaining pin fills the first of said holes passing through said top bushing of claim 10, said retaining pin in cooperation with said middle retaining pin locks gutterbroom assembly of claim 1 in it's rest position. e) a bottom retaining pin, said retaining pin fills the third of said holes passing through said bottom bushing of claim 10, said retaining pin in cooperation with said middle retaining pin locks gutterbroom assembly of claim 1 in its work position. f) a means by which to convey rotational energy from second end of claim 3 to said input shaft, said means comprising: a) shear pin b) a square drive hub, said drive hub fixed to said second end by means of said shear pin; c) a cup, said cup having four equal sides, an open end and a closed end, said cup capable of tightly fitting over said drive hub; d) a drive shaft, said drive shaft having a first and second end, said first end attached to said cup; e) a universal joint, having first and second ends, said first end attached to said second end of said drive shaft, said second end of joint attached to said gearbox; g) backing plate, said backing plate attached to said output shaft; h) a gutter broom brush, said gutter broom brush attached to said backing plate; 